Hoof-pad.



No. 833,336. PATENTED AUG. 13, 1907. M. HALLANAN.

HOOP PAD.

APPLIGATION FILED un 11. 1903.

Afro/mfr.

MICHAEL HALLNAN, OF NEW YORK, N. Y.

HOOP-PAD.

Specification of Letters Patent.

Patented Aug. 13, 1907.

Application filed May 11,1906. Serial No. 316,352.

To all whom it may concern:

Be it known that I, MICHAEL IIALLANAN, a citizen of -the United States7residing at New York city, in the county of New York and State of NewYork, have invented certain new and useful Improvements in Hoof-Pads, ofwhich the following is a specification.

The object of my invention is to so construct a pneu'- matic hoof padthat cracking and splitting of the elastic portion will be reduced to aminimum.

Heretoiorc pneumatic pads have not been a commercial success because theconstantv collapsing and expanding of the elastic portion under theweight of the animal has caused it to split and crack and quickly becomeuseless. By my invention a compensator is provided for the elasticportion of the pad which takes up the compression when it collapses andgives a quick expansion when the pressure is relieved.

Pads embodying my invention are no softer than the ordinary pneumaticpad so they afford the same support to the animal.

In the accompanyingr drawings like reference charac ters refer to likeparts throughout.

Figure lis a face view of my improved pad; Fig. 2 a sectional view ofthe structure of Fig. l on the line .t x; Fig. 3 a sectional view of thestructure of Fig. l on the line y y.

The pad has the usual backingof leather I, the intermediate layer ofcanvas 2, and the facing of rubber 8, the whole being secured together.

The ilange 4 extends around the toe and quarters to receive the metalshoe. The heel block 5 is solid and extends the full width of the heel.

The pneumatic chamber 6 is formed under the hollow of the hoof and hasthe leather backing l and the rubber facing 3 for its walls. The leatherback I may be provided with the opening 7 which acts as a relief valvewhen the pad is collapsed or compressed.

So far the pad is similar to the ordinary pneumatic pad. I do not,however limit myself to the precise embodiment shown and described as itis simply my preferred form.

My invention consists in providing the facing 3 of the pad with thelongitudinal depression or channel 8 which acts as a compensator whenthe pad is compressed. This channel is preferably made of graduallyincreasing depth from front to rear to proportion the compensation tothe amount of motion of the rubber facing. This channel is relativelybroad as compared with the corrugations on either side of it and iscomparatively thin7 themost yielding part of the pad being pneumaticcushion on the inside provided the channel, especially the middle partthereof. The rubber on either side of this channel or depression 8 iscompressed under the weight of the animal and the l pneumatic chambercollapses the thin part of the pad at the bottom of the channel actingas a hinge on which the parts turn. This channel or depression thereforeacts as a compensator in relieving the rubber facing from strains whichheretofore have resulted in cracking and splitting.

A bar 9 is molded across the elastic facing 3 on the inside of thechamber G, transversely to the channel S, for the purpose of stiffeningthe chamber and assisting in the quick return of the rubber facing toits initial condition after compression.

Having thus described my invention what I claim as Vnew and desire tosecure by Letters Patent is 1. A hoof pad having a convex rubber facingpneumatic cushion on the inside, provided with longitudinal grooves anda exterior face.

2. A hoof pad having a convex rubber facing forming a pneumatic cushionon the inside, provided with a series of longitudinal grooves and acentral widened groove gradually increasing in depth from front to rearin the exterior face.

forming a a series of central widened groove in the 5). A hoof padhaving a convex rubber facing forming a pneumatic cushion on the insideprovided with a series of longitudinal grooves a central widened groovein the exterior face and an integral rib or bar on the inner face of thepad, within the chamber, at substantially right angles to the grooves.

4. A hoor` pad having a convex rubber facing forming a pneumatic cushionon the inside provided 'with a series of longitudinal grooves, a centralwidened groove gradually increasing in depth from front to rear in theexterior face; and an integral rib or bar on the inner face of the pad,within the chamber, at substantially right angles to the grooves.

5. A hooi' pad having a convex rubber facing forming a with a series oflongitudinal grooves and a central widened groove in the exterior face;and a backing of leather to which said rubber facing is secured.

(i. A hoof pad having a convex rubber facing forming a pneumatic cushionon the inside provided with a series of longitudinal grooves and acentral widened groove graduall)Y increasing in depth from front to rearin the er terior face; and a backing of leather to which the rubberfacing is secured.

Tv A hoof pad having a convex rubber facing forming a pneumatic chamberon the inside provided with a series of longitudinal grooves and acentral widened groove gradu` ally increasing in depth from front torear in the exterior face; an integral rib or bar on the inner face ofthe pad, within the chamber', at substantially right angles t0 thegrooves; and a leather' backing to which the rubber facing is secured.

8. A hoof pad having a convex rubber facing, a backing a flange aroundthe toe and quarters adapted to receive 1() of leather and anintermediate layer of canvas, the whole a metal shoe. being securedtogether; the facing forming a pneumatic In testimony whereof I haveaffixed my signature in cushion on the inside and provided with a seriesof 1onpresence 01' two witnesses. gtudinal grooves and a central widenedgroove in the exterior face; the facing also having a solid heel blockextending the full width thereof and au integral bar or rib, Witnesses:within the chamber, at substantially right angles to the RoB'r. B.Kinneoim, grooves; a vent leading from the pneumatic chamber and O. H.HoPwooD.

MICHAEL HALLANAN.

